TWI494487B - Outer cross beam - Google Patents

Description

Outer transverse beam

The present invention relates to a beam, and more particularly to an outer transverse beam.

Most of the existing high-rise buildings and ultra-high buildings use the box-shaped steel column 11 shown in Figure 1 as the steel structure. The box-type steel column 11 has good performance and many cross-section selectivity. However, the existing box-shaped steel columns 11 are mostly welded with four steel plates 111. Therefore, there are more than 100 weld beads and high cost.

Referring to Figures 1 and 2, in recent years, with the advancement of industrial technology, the cross-sectional size of the cold-worked steel pipe 12 (made by cold rolling or cold stamping) as shown in Fig. 2 is greatly improved, and can be applied not only to medium and low. Floors can even replace box steel columns 11 for use in tall and super-high buildings. Moreover, the cold-worked steel pipe 12 has a small number of weld beads 100, and can be fabricated by automated mechanical equipment. Therefore, not only is the stability high and the cost is lower than that of the box-shaped steel column 11.

However, since the cold-worked steel pipe 12 is completed, it is not possible to weld the transverse baffle to the steel plate 111 by thermoelectric slag welding as in the existing box-shaped steel column 11, and therefore, it is necessary to adopt a different steel column 11 than the existing box-shaped steel column 11 The connection structure is used to transfer the force between the beam and the column.

Accordingly, it is an object of the present invention to provide a cross-beam that has a high flexural strength, high toughness, and an amount of material that can be saved.

Thus, the outer transverse beam of the present invention is used to connect a steel pipe column and a beam, the outer transverse beam comprises a web, and two transverse partitions respectively connected to opposite sides of the web.

The web has a first end connected to the steel pipe column and a second end facing away from the first end in the direction of the beam. The transverse partitions each have an outer transverse partition section connecting the steel pipe, a toughness treatment section integrally extending from the outer transverse partition section toward the second end, and an integral portion facing the toughness treatment section The connecting portion of the second end direction extending in a straight line, the slope of the toughness processing section being smaller than the slope of the outer transverse partition section.

The invention has the beneficial effects of: an outer transverse partition section extending gradually toward the second end by the transverse partition, and a toughness treatment section integrally extending from the outer transverse partition section toward the second end To improve flexural strength and toughness, and to use beams with smaller cross-sections to save on the use of steel to reduce costs.

2‧‧‧External beam

3‧‧‧ web

31‧‧‧ first end

32‧‧‧second end

4‧‧‧ diaphragm

41‧‧‧Outer transverse partition section

411‧‧‧Fixed parts

412‧‧‧outer diaphragm

42‧‧‧Toughness treatment section

43‧‧‧Continuous paragraph

44‧‧‧ outer surface

5‧‧‧Testing device

51‧‧‧Clamping table

52‧‧‧Hydraulic actuator

6‧‧‧ reinforcing plate

A0‧‧‧ joint surface

A1‧‧‧ first connection surface

A2‧‧‧second connection surface

F‧‧‧ force

P‧‧‧Load

200‧‧ ‧ steel pipe column

201‧‧‧ beams

D _{s 12} ‧‧‧The shortest distance between the first connecting surface and the second connecting surface

d _d ‧‧‧ The shortest distance between the outer surfaces of the diaphragm

a ‧‧‧The shortest distance between the first joint and the steel pipe column

t _d ‧‧‧ thickness of the diaphragm

b _c ‧‧ ‧ the width of the steel pipe column

h _d ‧‧‧The shortest distance between the joint and the steel pipe column

t _w ‧‧‧The thickness of the web

L ‧‧ ‧ the length of the steel pipe column facing the surface of the fixing to the position of the beam

b _{f 1} ‧‧ ‧ the width of the toughness treatment section on the first joint surface

b _{f 2} ‧‧ ‧ the width of the toughness treatment section on the second joint surface

g ‧‧‧The length of the outer transverse beam

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a cross-sectional view showing a conventional box-shaped steel column; FIG. 2 is a cross-sectional view showing a conventional cold-work steel pipe; Figure 3 is a side elevational view of the first preferred embodiment of the outer transverse beam of the present invention; Figure 4 is a side view of another angle, to help explain Figure 3; Figure 5 is a partial cross-sectional view showing the application of the first preferred embodiment; Figure 6 is a partial cross-sectional view showing a second preferred embodiment of the outer transverse beam of the present invention; Figure 7 is a schematic view showing a Test apparatus for testing the second preferred embodiment; and Figures 8(a), (b), and (c) are partial cross-sectional views illustrating three different sizes of outer cross members.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 3 and 4, a first preferred embodiment of the outer cross member 2 of the present invention comprises a web 3, two transverse partitions 4 respectively connected to opposite sides of the web 3, and a joint surface A0. a first connecting surface A1 and a second connecting surface A2.

The web 3 has an opposite first end 31 and a second end 32. The transverse partitions 4 are respectively connected to opposite sides of the web 3, and the transverse partitions 4 each have an outer transverse partition section 41 connecting the first ends 31, and an integral outer partition a toughness treatment section 42 in which the plate section 41 is tapered toward the second end 32, a continuous section 43 integrally extending from the toughness treatment section 42 toward the second end 32, and an outer surface away from the web 3 44.

The outer transverse partition section 41 of the transverse partition 4 has a U-shaped fixing portion 411, and one integrally faces the tough portion by the fixing portion 411 The outer segment 42 is tapered and extends.

The slope of the toughness treatment section 42 is smaller than the slope of the outer transverse partition portion 412, and the joint surface A0 is interposed between the fixed portion 411 and the outer transverse partition portion 412, the first joint surface A1 It is between the toughness treatment section 42 and the outer transverse partition section 41, and the second connection surface A2 is between the toughness treatment section 42 and the connection section 43.

The shortest distance between the first connecting surface A1 and the second connecting surface A2 satisfies the following formula: D _{s 12} = βd _d

Wherein D _{s 12} is the shortest distance between the first connecting surface A1 and the second connecting surface A2, d _d is the shortest distance between the outer surfaces 44 of the diaphragm 4, and β is a coefficient of 0.5 to 0.75 between.

Referring to FIG. 5, and referring back to FIG. 4, in actual application, the outer cross member 2 is used for connecting a steel pipe column 200 and a beam 201, and the transverse partition portion 41 of the transverse partition 4 is fixed. The portion 411 is welded to the steel pipe column 200, and the connecting portion 43 of the horizontal partition 4 is connected to the beam 201 by end plate connection. It should be particularly noted that, in practical applications, the connecting portion 43 of the diaphragm 4 may also be connected by a cover plate joint or a welding joint, and the first connecting surface The shortest distance between A1 and the steel pipe column 200 satisfies the following formula:

Where a is the shortest distance between the first joint surface A1 and the steel pipe column 200, t _d is the thickness of the diaphragm 4, b _c is the width of the steel pipe column 200, and h _d is the joint surface A0 and The shortest distance of the steel pipe column 200, d _d is the shortest distance between the outer surfaces 44 of the diaphragm 4, t _w is the thickness of the web 3, and M _ne is the outer cross member 2 joined to the beam 201 The nominal bending moment strength required, α is a coefficient between 0.9 and 0.95, F _y is the relief stress of the outer cross member 2, and L is the surface of the steel pipe column 200 facing the fixing portion 411 to the beam 201 The length of the force F position.

The width of the toughness treatment section 42 of the outer transverse partition 4 on the first joint surface A1 satisfies the following formula:

Wherein b _{f 1} is the width of the toughness treatment section 42 of the outer transverse partition 4 on the first joint surface A1, and M _ne is the nominal bending moment strength required when the outer cross member 2 is joined to the beam 201 , α is a coefficient between 0.9 and 0.95, F _y is the relief stress of the outer cross member 2, a is the shortest distance between the first connecting surface A1 and the steel pipe column 200, and L is the steel pipe column 200 facing The length of the surface of the fixing portion 411 to the position of the beam F by the force F, t _d is the thickness of the diaphragm 4, d _d is the shortest distance between the outer surfaces 44 of the diaphragm 4, t _w It is the thickness of the web 3.

The width of the toughness treatment section 42 of the outer transverse partition 4 on the second joint surface A2 satisfies the following formula:

Where b _{f 2} is the width of the toughness treatment section 42 of the outer transverse partition 4 on the second joint surface A2, and M _ne is the nominal bending moment strength required when the outer cross member 2 is joined to the beam 201 , α is a coefficient between 0.9 and 0.95, F _y is the relief stress of the outer transverse beam 2, a is the shortest distance between the first joint surface A1 and the steel pipe column 200, and d _d is the transverse partition The shortest distance between the outer surfaces 44 of the plate 4, β is a coefficient between 0.5 and 0.75, L is the length of the steel pipe column 200 facing the surface of the fixing portion 411 to the position of the force F of the beam 201, t _d is 4 is the lateral thickness of the separator, t _w is the thickness of the web 3.

The nominal plastic bending moment of the first connecting surface A1 of the outer cross member 2 satisfies the following formula:

Wherein, M _{p 1} is the nominal plastic bending moment of the first joint surface A1 of the outer cross member 2, F _y is the relief stress of the outer cross member 2, and b _{f 1} is the outer transverse partition 4 The width of the toughness treatment section 42 on the first joint surface A1, t _d is the thickness of the diaphragm 4, d _d is the shortest distance between the outer surfaces 44 of the diaphragm 4, t _w is the web The thickness of 3.

The strength of the outer diaphragm section 41 of the transverse partition 4 is such that:

among them, Is the strength of the outer diaphragm section 41 of the diaphragm 4, M _{p 1} is the nominal plastic bending moment of the first joint surface A1 of the outer diaphragm 2, and d _d is outside the diaphragm 4 the shortest distance between the surface 44, t _d is the thickness of the separator 4 is a cross.

Referring to Figure 6, a second preferred embodiment of the outer cross member 2 of the present invention is substantially similar to the first preferred embodiment, except that the outer cross member 2 further comprises two U-shapes. And corresponding to the reinforcing plate 6 of the fixing portion 411 of the horizontal partition 4, only one of the reinforcing plates 6 is shown in FIG. 6 due to the viewing angle relationship. With the reinforcing plate 6, it is possible to increase the stiffness by about 39%.

Referring to Figures 7 and 8, in order to verify the efficacy of the present invention, the inventors used the test apparatus 5 shown in Figure 7 for the three numbers HH1-EP (Fig. 8(a)) and HH2-EP (Fig. 8(b)). A simulation experiment is carried out with a second preferred embodiment of the transverse beam 2 other than the HH2-CP (Fig. 8(c)), the testing device 5 comprising a clamping table 51 for clamping a steel tube column 200, and an energy A hydraulic actuator 52 that horizontally reverses the load P is applied to a beam 201. The cross section of the steel pipe column 200 is RHS400×400×15, the length is 3100 mm, and the cross section of the beam 201 is BH 456×210×10×16.

Wherein, the outer transverse beam 2 of FIG. 8(a) numbered HH1-EP is connected to the beam 201 by end plate jointing, and D _{s 12} =0.5 d _d =0.5 (456)=228 mm, b _{f 1} = 240 mm, b _{f 2} = 210 mm, a = 417, h _d = 100, and the length of the splicing section 43 is 415 mm.

Figure 8 (b) The outer cross member 2, numbered HH2-EP, is joined to the beam 201 by end plate engagement, and D _{s 12} = 0.75 d _d = 0.75 (456) = 342 mm, b _{f 1} = 240 mm, b _{f 2} = 195 mm, a = 417, h _d = 100, and the length of the splicing section 43 is 541 mm.

8(c) The outer cross member 2, numbered HH2-CP, is connected to the beam 201 by means of a cover joint, and D _{s 12} = 0.75 d _d = 0.75 (456) = 342 mm, b _{f 1} = 240 mm, b _{f 2} = 195 mm, a = 417, h _d = 100, and the length of the splicing section 43 is 541 mm.

And the numbers are HH1-EP, HH2-EP and HH2-CP The experimental results of the flexural strength of the outer cross member 2 are shown in Table 1 below.

The M _cal of Table 1 is the theoretical deflection strength of the outer cross member 2, the P ⁺ _peak is the positive displacement (the (+) direction in Fig. 7), and the maximum load P, P ^- _peak is the negative displacement (in Figure 7). The maximum load P, P _peak of the (-) direction is the average load P, and M _exp is the flexural strength obtained by the experiment of the outer cross member 2, and γ is the ratio of the experimental flexural strength to the theoretical flexural strength. As can be seen from Table 1, the outer cross members 2 have a higher flexural strength than the theoretical strength.

The plastic angular capacity of the transverse beam 2 except the numbers HH1-EP, HH2-EP and HH2-CP is shown in Table 2 below.

δ _y of Table 2 is the displacement displacement, Is the positive maximum displacement, It is the negative maximum displacement, δ _u is the average displacement, and θ _p is the plastic angular capacity of the outer cross member 2 . It can be seen from Table 2 that the plastic corner capacity of the outer cross member 2 is also greater than the specification of the existing 3% plastic corner capacity.

Referring to Figures 7 and 8, and reviewing Figure 5 together, the relationship between the required nominal bending moment strength of the beam 201 and the length of the outer transverse beam 2 satisfies the following formula:

Wherein, M _g is the required bending moment strength of the beam 201, and L is the length of the steel pipe column 200 to the force F position of the beam 201 (ie, the position of the hydraulic actuator 52 applying the horizontal reverse load P in FIG. 7) , g is the length of the outer cross member 2 . HH1-EP is taken as an example of which M _g = 0.6 M _e . Therefore, it is estimated that the outer cross member 2 connects the steel pipe column 200 and the beam 201, thereby saving about 30% of the steel amount, which is advantageous for reducing the material cost.

In summary, the outer transverse beam 2 of the present invention utilizes the outer transverse partition section 41 of the transverse partition 4 which is tapered toward the second end 32, and is integrally formed by the outer transverse partition section 41. The second end 32 is tapered to extend the toughness treatment section 42 to improve the flexural strength and toughness, and the beam 201 having a smaller cross section can be used to save the cost of the steel material and reduce the cost, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

2‧‧‧External beam

3‧‧‧ web

31‧‧‧ first end

32‧‧‧second end

4‧‧‧ diaphragm

41‧‧‧Outer transverse partition section

411‧‧‧Fixed parts

412‧‧‧outer diaphragm

42‧‧‧Toughness treatment section

43‧‧‧Continuous paragraph

A0‧‧‧ joint surface

A1‧‧‧ first connection surface

A2‧‧‧second connection surface

D _{s 12} ‧‧‧The shortest distance between the first connecting surface and the second connecting surface

Claims (8)

An outer transverse beam for connecting a steel pipe column and a beam, the outer transverse beam comprising: a web having a first end connecting the steel pipe column and a direction away from the first end toward the beam a second end; and two transverse partitions respectively connected to opposite sides of the web, the transverse partitions each having an outer transverse partition section connecting the steel tubular columns, and an integral outer transverse partition section a toughness treatment section extending toward the second end, and a continuous section extending linearly from the toughness treatment section toward the second end, the slope of the toughness treatment section being smaller than the slope of the outer diaphragm section The outer transverse partition section of the transverse partition has a U-shaped fixing portion connected to the steel pipe column. The outer transverse beam of claim 1, wherein the transverse partitions further have an outer surface away from the web, and the outer transverse beam further comprises a toughness treatment section and the outer transverse partition a first connecting surface between the plate segments, and a second connecting surface between the toughness processing segment and the connecting segment, wherein a shortest distance between the first connecting surface and the second connecting surface satisfies the following formula: D _{s 12} = Βd _d where D _{s 12} is the shortest distance between the first joint surface and the second joint surface, d _d is the shortest distance between the outer surfaces of the diaphragm, and β is a coefficient between 0.5 and 0.75 . The outer transverse beam of claim 2, wherein the outer transverse partition section of the transverse partition further has an outer transverse partition portion integrally extending from the fixing portion toward the toughness treatment section, and The outer cross beam further includes a joint surface between the fixing portion and the outer cross plate portion, and the shortest distance between the first connecting surface and the steel pipe column satisfies the following formula: Where a is the shortest distance between the first connecting surface and the steel pipe column, t _d is the thickness of the transverse partition, b _c is the width of the steel pipe column, and h _d is the shortest distance between the joint surface and the steel pipe column The distance d _d is the shortest distance between the outer surfaces of the diaphragm, t _w is the thickness of the web, and M _ne is the nominal bending moment strength required when the outer cross member is joined to the beam, α is The coefficient is between 0.9 and 0.95, F _y is the relief stress of the outer transverse beam, and L is the length of the steel pipe column to the force position of the beam. The outer transverse beam according to claim 3, wherein the width of the toughness treatment section of the outer transverse partition at the first joint surface satisfies the following formula: Wherein b _{f 1} is the width of the toughness treatment section of the outer transverse partition at the first joint surface, and M _ne is the nominal bending moment strength required when the outer transverse beam is joined to the transverse beam, and α is a coefficient Between 0.9 and 0.95, F _y is the relief stress of the outer transverse beam, a is the shortest distance between the first connecting surface and the steel pipe column, and L is the surface of the steel pipe column facing the fixing portion to the beam The length of the force position, t _d is the thickness of the diaphragm, d _d is the shortest distance between the outer surfaces of the diaphragm, and t _w is the thickness of the web. The outer transverse beam according to claim 4, wherein the width of the toughness treatment section of the outer transverse partition at the second joint surface satisfies the following formula: Wherein b _{f 2} is the width of the toughness treatment section of the outer transverse partition at the second joint surface, and M _ne is the nominal bending moment strength required when the outer transverse beam is joined to the transverse beam, and α is a coefficient Between 0.9 and 0.95, F _y is the relief stress of the outer transverse beam, a is the shortest distance between the first joint surface and the steel pipe column, and d _d is the shortest distance between the outer surfaces of the diaphragm , β is a coefficient between 0.5 and 0.75, L is the length of the surface of the steel pipe column facing the fixing portion to the position of the beam, t _d is the thickness of the diaphragm, t _w is the web thickness of. The outer transverse beam of claim 5, wherein the nominal plastic bending moment of the first connecting surface of the outer transverse beam satisfies the following formula: Wherein, M _{p 1} is the nominal plastic bending moment of the first joint surface of the outer transverse beam, F _y is the relief stress of the outer transverse beam, and b _{f 1} is the toughness treatment section of the outer transverse partition The width of the first joining surface, t _d is the thickness of the transverse partition, d _d is the shortest distance between the outer surfaces of the transverse partition, and t _w is the thickness of the web. The outer transverse beam according to claim 5, wherein the strength of the transverse partition portion of the transverse partition is such that: among them, Is the strength of the outer diaphragm section of the diaphragm, M _{p 1} is the nominal plastic bending moment of the first joint surface of the outer diaphragm, and d _d is the shortest distance between the outer surfaces of the diaphragm , t _d is the thickness of the diaphragm. The outer cross member according to claim 3, further comprising two reinforcing plates each having a U-shape and correspondingly connecting the fixing portions of the horizontal partitions.